Frequently Asked Questions
How do I look up someone's zip code?
You can look up the zip code for individuals and businesses in the United States and Puerto Rico in
1. The ZIP+4 Code Look-up
3. National five digit zip code and post office directory: http://umnlib.oit.umn.edu/F/E5RDDIDMS3VTVPUAB8BUSHVN29MC6BR37LD7UM4BNXV4...